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The Cisco router must enforce a 60-day maximum password lifetime restriction.


Overview

Finding ID Version Rule ID IA Controls Severity
V-96269 CISC-ND-000650 SV-105407r1_rule Medium
Description
Any password, no matter how complex, can eventually be cracked. Therefore, passwords need to be changed at specific intervals. One method of minimizing this risk is to use complex passwords and periodically change them. If the network device does not limit the lifetime of passwords and force users to change their passwords, there is the risk that the passwords could be compromised. This requirement does not include root account or the account of last resort which are meant for access to the network device in case of failure.
STIG Date
Cisco IOS XE Router NDM Security Technical Implementation Guide 2019-07-25

Details

Check Text ( C-95103r1_chk )
The Cisco router is not compliant with this requirement. However, the risk associated with this requirement can be fully mitigated if the router is configured to utilize an authentication server to authenticate and authorize users for administrative access.

Review the router configuration to verify that the device is configured to use an authentication server as primary source for authentication as shown in the following example:

aaa new-model
!
aaa authentication login LOGIN_AUTHENTICATION group radius local



ip http authentication aaa login-authentication LOGIN_AUTHENTICATION
ip http secure-server



radius-server host x.x.x.x auth-port 1645 acct-port 1646 key xxxxxxx



line con 0
exec-timeout 10 0
login authentication LOGIN_AUTHENTICATION
line vty 0 4
exec-timeout 10 0
login authentication LOGIN_AUTHENTICATION

If the router is not configured to use an authentication server to authenticate and authorize users for administrative access, this is a finding.
Fix Text (F-101945r1_fix)
Step 1: Configure the Cisco router to use an authentication server as shown in the following example:

R4(config)#radius host 10.1.48.2 key xxxxxx

Step 2: Configure the authentication order to use the authentication server as primary source for authentication as shown in the following example:

R4(config)#aaa authentication login LOGIN_AUTHENTICATION group radius local

Step 3: Configure all network connections associated with a device management to use an authentication server for the purpose of login authentication.

R4(config)#line vty 0 4
R4(config-line)#login authentication LOGIN_AUTHENTICATION
R4(config-line)#exit
R4(config)#line con 0
R4(config-line)#login authentication LOGIN_AUTHENTICATION
R4(config-line)#exit
R4(config)#ip http authentication aaa login-authentication LOGIN_AUTHENTICATION